export declare const LOCAL_REFERENCE_DOWNLOAD_VERSION = "local-reference-download-v1";
/** Local-only setting, never accept a filename/directory from a website request. */
export declare function referenceDownloadDirectory(): Promise<any>;
/** Only explicit download-extension filenames for this exact creator and ID.
 * A matching filename is user-provided provenance, not a platform/content authenticity certificate. */
export declare function matchesReferenceDownload(fileName: string, sourceUrl: string): boolean;
export declare function readDownloadedReference(sourceUrl: string, workDir: string, maxBytes: number, directory?: string): Promise<{
    file: string;
    transcript: string;
    provenance: string;
} | null>;
/** Wait only for the exact completed file; requesting the browser again could duplicate a download. */
export declare function recoverReferenceWithBrowser(sourceUrl: string, workDir: string, maxBytes: number, start: (sourceUrl: string) => Promise<unknown>, directory?: string, timeoutMs?: number): Promise<{
    file: string;
    transcript: string;
    provenance: string;
}>;